CVE-2026-64608

Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths

State: Published
Severity: 9.8 Critical
Published: Jul 21, 2026
Updated: Jul 21, 2026
Reserved: Jul 20, 2026

Description

Heap type confusion and out-of-bounds read/write in the Apache Fory C++ implementation. When deserializing data in compatible mode, the field-skip paths do not correctly validate the declared field types against the actual data, so input with an inconsistent schema can cause type confusion and out-of-bounds memory access. Only the C++ implementation is affected; other language implementations of Apache Fory are not.

This issue affects Apache Fory C++: from 0.14.0 before 1.4.0.

Users are recommended to upgrade to version 1.4.0, which fixes the issue.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
CWE-787 Out-of-bounds Write
CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Apache ForyApache Software Foundation	0.14.0 to before 1.4.0Affected

References

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